Dr. Olusanya obtained his first degree from the College of Health Sciences, Ladoke Akintola University, Ogbomoso, and completed his residency at the University College Hospital, Ibadan. He also holds a diploma in Anaesthesia.

He is a Fellow of the National Postgraduate Medical College of Nigeria and a Fellow of the Nigerian Association of Anaesthetists (NSA).

He is a Consultant Anaesthetist / Intensivist at Iwosan Lagoon Hospitals.